When your first airbrush is a Master. ;)
I bought a kit with a pretty nice tank compressor (dryer, gauge, etc etc). The whole kit was like $200, and it was my first airbrush ever. So I didn't know what I didn't know. I made lots of mistakes, mostly around failing to clean it well. Better to learn on the cheapy.
Chrome flashing in crazy places, bumpy action, the needle was bent when I got it (I was able to straighten it though), rough threads, etc. The new Iwata, while only $60 on Amazon, feels better in every way.
I'll keep the Master, maybe dedicating it to hotter paints like automotive urethane, and leave the Iwata for acrylics. We'll see after I've run the Iwata for a while. :)